Liquid pump



Jan. 17, 1933. R KRAUSE 1,894,275

LIQUID PUMP Filed Nov. lO. 1928 5 Sheets-Sheet l P. KRAUSE Jan. 17, 1933.

LIQUID PUMP Filed Nov. lO. 1928 5 Sheets-$heet 2 u o m v n nd P. KRAUSE Jan. 17, 1933.

LIQUID PUMP 5 sheetssheet s yFiled Nov. lO. 1928 vwemtow P. KRAUSE LIQUID PUMP Jan. 17, 1933.

Filed'Nomlo, 1928 5 Sheets-Sheet 4 Y F40/ ATF-amine. @Home/13 Jan. 17, 1933. P. KRAusE 1,894,275

LIQUID PUMP Filed Nov. 10, 1928 5 Sheets-Sheet 5 vwentoz a Sito/:Meg

f5 UL ATP/10:35.

Patented Jan. 17, 193s UNITED, STATES PATENT OFFICE PAUL xnAusE, oE'nABYLoN, NEW Yom; AssrGNon, BY DIRECT Ann MESNE ASSIGN- MENTS, or ONE-THIRD 'To WILLIAM E. sPn-AGUaAND ONE-THIRD 'ro HARRY TAYLOR, Born or BABYLoN, NEW YORK; LUCY A. srRAGUE ADMINISTEATRIXOE SAID WILLIAM E. SPRAGUE, DECEASED y LIQUID ISUMP This invention relates to liquid dispensing machines and in particular to one for automatically providing gasoline, lubricating oil, or the like to motor vehicles.

A particular object of the invention is to provide an automatic liquid dispensing machine which may be operated by hand or electricity and which will automatically measure and discharge Athe'amount of liquid purchased, depending upon` the number of coins and the denomination of same which are placed in the coin mechanism of said machine.

A further object of the invention'is to provide an automatic machine of the character referred to which may be placed along a high- Wayat points remote from the regular gasoline filling station which may be operated by the operator of an automobile for the filling of a gasoline tank or for the purchase of any amount depending upon the-number of coins that the operator happens to have, the machine f being adaptable to receive, nickels, dimes, quarters and half dollars and if desired,-silver dollars or other coin-like tokens;

A further object of my invention is to provide in a dispensing machine of this character, a means whereby the hand control of the machine as Well as the electric control thereof may be regulated. Another means is provided whereby any number of differentcoins may be inserted in thefdifferent slots at the same time, the mechanism being automatically set by the coins so that `a redetermined amount of fiuid will be vende Another feature employed in the improved machine is an indicatorl for showing when the machine is empty, means also being employed for closing the entrance to the coin slot when invention that they mayen the supply of fluid has been exhausted.

To enable others skilled in the art to fully comprehend the underlyingID features of my 1 ody the same in the various modifications in structure and relation contemplated, drawings depicting a prefered form has been annexed as a part of this disclosureand in such drawings, similar reference characters denote corresponding parts throughout all theviews, of which,

Figure 1 is a view in front elevation illustrating my automatic liquid dispensing Inachine, a part thereof beingl broken away to show the coin mechanism.

Figure 2 is a section taken through a portion of the machine on the line 2-2 of Figure 1. i

Figure 3 is a View similar to Figure 2 taken on the line 3-3 of F igurel.

Figure 4 is a view similar to Figure 3 but taken on the line 4 4 of Figure 1. I

Figure 5 is a section taken on the line 5-5 of 'Figure 1 and illustrating in top plan view, a part of the coin detecting mechanism.

Figure 6 is4 a section taken-on the line 6-6 of Figure 2 and illustrates one of the control members. i

Figure 7 isl adiagrammatic pump and discharge mechanism.

Referring to the drawings in detail, 1 indicates one of a number of coin slots, each of which is shaped to admit a. different size df com, such as a nickel, dime, l quarter, half dollar or other coin of predetermined `dimension. Any given numberwo coins may be inview of the erted in yeach slot and any given number of,

(hook, lever 4, said pivoted member bearing on a suitable Wheel 3-A attached to a shaft 3-B upoh which the counter wheel or gears indicated by the numeral 2 are carried see Figure l. These counting Wheels or gears 2 are revolvably mounted upon the shaft but are normally held from rotating relatively thereto through the medium of suitable friction disks 3-C `which are secured to the shaft and have yieldable bearing arrangement with the gears. This revolving 'of the counting gear shaft is accomplished through the mediumof the extended portion 3,--D, provided at one side of the pivoted member 3 which is arranged to engage the Wheel 3-A to turn all of the counter wheels against the actuating ratchet bars which act as stops in,

' latter addition to their normal fimction as will be hereinafter described.

The countingwheels or gears 2 are each moved va toothat a time or any predetermined numberof teeth by a corresponding ratchet bar 5 which is attached to its pivoted lever 6 whose depending end protrudes into the adjacent coin slot, the rack 5 -being thereby moved u wardly'by the inserted coin-each engagin t edepending end of lever 6 and the ing returned to its coin slot engagin position again by a suitable spring attach to said lever 6.

This spring, connecting the ratchet bar 5 and the lever 6, holds the ratchet bar againsty the teeth of the counting wheels or gears 2. A suitable extensionA 5- on the ratchet bar 5 is arran pletionv o the downward movement of said ratchet bar to disengage the same from the counting wheels or gears 2, allowing the latter to beturned to Ltheir zero count position by the member 3, it being understoodv that when the hose is removed from the hook lever 4, the latter is pulled upwardly by the spring 7 .l yThe member 3 consists of a plate partitioned as at 3-H' which is piv- Y oted as at 3-D to the enlarged plate end of the rod 8 which, .in turn, is connected to Ythe hook-lever 4. This plate end is p'rovided with limiting pins ,and a suitable exltension 3-E on the member 3 limits the pivotal movement of the latter. This extended portion of the member 3 is normally retained against the left hand pin by the spring `9 which connects the member 3 with the plate end of the lever 8. The angles of the. compartments within'the member 3 when lit is normally inthe position hereinbefore re-v ferred to, due to the connecting spring 9, maintain the guide pin 10 which is secured to a bracket lO-A4 above the right hand `compartment of the member` 3 and causes the guide pin 10 to travel down this right hand compartment on an upstroke of the lever 8 thus causing-the extended portion 3D o the member 3` to engage against the wheel 3-A fastened to the counting wheel shaft, the upward movement of the member 3 returning allof the countinvgl wheels or gears to their zero position. wheels ared moved the limit of their predetermined travel, the extension on the rack 5 orprotrudingtooth, as itmght be called, comes into contact with a suitable pin carried ,on the bracket 10-A, thus preventing any further upward movement of said rack.

This sto pin may be adjustably mounted in the lbrac et 10V-A sov that the limit of movement a'orded the counting gears will be adjustable.v Each of the counting gears are vprovided with an extension '2-G which is lbut w arrangled to normally rest on top of the rack 5 ich in its furthest 'advance movement is arranged to engage the stop pin 'carried d to strike a pin 5--B upon com' in the bracket and indicatedby nun l meral 10-C. This contact stops the revolution ofthe ear further and, in turn, prevents operatlon of the rack 5 with the result that the lextended portion of lever 6 cannot move out of the coin slot 1 when a coin is inserted.F This arrangement locks the ycoin slot and prevents further insertion of the coin. There is one of these counter arrangements for each of the slots and the locking of one or more of the slots does not affect the others wh/erein the limit of coin insertion has not jbeen reached. y

When the member 3 has completed its upward movement and has set all the counting gears at zero, the pin 10 will, have struck the angular bottom of the member 3 andthe member 3 will be cammed over until the pin is in alignment with the left hand compartment 3`K thereof which arrangement will guide the member 3'awa'y and clear of the counting wheels upon a downward movement of the lever 8 when tle hose is again hung up upon lever 4due to the fact that the pinv strikes thempartition plate 3H and swings the member 3 toward the right. This movement of the lever 3 away from the count-- ing gears, of course, leaves them in their zero position and ready for the insertion of coins in the slots. Should any of the counters not have been moved from their zero position when the member 3 in its upwardl movement, sets the counters atzero, no harm will be done as the counter gears are mounted between friction disks, as hereinbefore described, on 1 might better be termed, being mounted on a common shaft 1'1--A and each being housed in a suitable `casing 11-B. Upon inserting one or more coins of sin le ori'nixed denomination, the coins drop own their respective up wheels 11, the coin ick-up'recesses ll--C in the periphery of sai wheels, are so spaced thatano two coins will be picked up at once. The drive shaft ll-'Aof the coin wheels 11 has a spiral gear 13 attached at onevend thereof which is driven by the gear "14 mounted onthe pump drive shaft 15; On Ithe. pump drive shaft l5 is mounted the driving member 1,5-A, of the clitch 16, the latter being actuated by thespring 17 but positively operated by a clutch throw-out yoke 18 which ismounted 0n a suitable shaft which has keyed thereto, the clutchthrow-out lever 19. On this clutch throwout lever 19 isrmounted 4 into a separate coin' pick-up dlsk 11, the disks or wheels, as they 1 en the counting 7coin slots 1 or chutes and on to the coin pick` a catch 19-A which engages catch lever 20 which holds the clutch out of engagement with the driven member 21 of the clutch combination, the driven clutch member being part of a hollow shaft whereon is mounted the pump rack drive gear 22, said hollow shaft being journalled in suitable bearings disposed at either side of the lift pump rack 23.

After a coin is picked up by any ofv the coin pick-up disks or wheels 11, the rotation of the disk bringsthe coin into engagement with the rocker wheel 12 and the latter'is lifted up by the coin and through the medium of the compound levers 24 and 25, operate the ratchet bar 26, the upper end of which is serrated and arranged to enga-ge the ratchet toothN gear 28. This ratchet bar 26 in moving upwardly, leaves the ratchet bar throw-outstop 27, which is mounted upon the coin chute 1 and meshes with ratchet tooth gear 28 which, in turn, operates. to move the pump stop rack through the medium of the gear 29 which is mounted on a shaft common with the ratchet tooth gear 28 and indicated by the numeral 28-A. The moving to the left of the pump stop rack 30 brings the bevel stop 31, which is a. part of said rack into engagement with the trip lever 32 which is mounted on one end of a plunger gear Atrip lever 33 and causes depression of the lever 32 which,-being operatively confnected to rod 34 through the medium of the lever 33 trips the plunger 35 and plunger gear 35--A and brings it into engagement with gear 36 which is mounted Qn the pump `drive`shaft 15. This plunger gear is illustrated in -Figure 6.

The plunger gear 35-A has a high tooth segment 35--B which, after full revolution of the plunger gear 35-A, engages with the gear 36 and raises the plunger gear 35-A to its disengaged position as shown in Figure 6 ,thereby bringing the plunger rod 35--E which is attached to the plunger 35, into engagement with `the rocker arm 38 which, in turn, depresses the plunger 39- which in its downward travel, disengages the catch lever 20 thereby releasing the clutch throw-out lever 19 and permitting engagement of the clu`tch 'and consequent operation of the pump.

This gear arrangement is for the purpose vof permitting the pump drive shaft 15 to rotate and` with it, the gear 14, without moving the pump rack until it has rotated ,the coin disks 11 until the latter are empty orl partly empty of coins which actuate the pump stop rack. After the plunger rod 35S-E has operated, it returns to its normal position and is engaged by the catch' 37 land holds gear 35-A out of engagement With-the gear 36 until *it -is tripped again. Upon the return movement of stop rack 30, the bevel stop 31 depresses the trip lever 32 and does not operate lever 33 or the mechanism connected therewith. The-trip lever 32 is held in its operating position by the circular spring 40.

The stop rack 30 is provided on its upper l side with the notches or Serrat-ions 30--A which are engaged by a ball spring detent 11e-A. The notches are so spaced that each notch represents a distancelor` movement of the stop rack 30from the pump rack stop 160 as the equivalent of the amount of liquid to be delivered for a coin. For instance in this case,

it might be assumed that tive cents is the basic e on the ratchet bar 26, disengaging the latter from gear 28 thus preventing operation of the stop mechanism when the limit of the latter is reached. The" lever 41 at the same time engages the lever 42 which isconnectedv through the'rod 43 toa throw bar 44 Which moves the inger'45 which in turn, is attached to the shaft 45-E bearing the iiipper angle piece 46'to move the same into engagcment with the spring 47 in Iconnection with which it is yieldably held in placey until the coins. which are left over after the precedingcoins have operated the stop mechanism toits limit of movement rest thereon after coming down the chute 46A. Any

coins which'maybe in the slot when the total capacity of the machine for-one` operation is reached are shunted down chute 48 by the extended portion 46-B of the flipping angle piece 46 which is moved back to the position shown in Figure 2 by the return'of thestop rack 30; f. y

Upon the return of the pump rack stop 30,'the projecting tooth 30--E atthe right hand end thereof throws the lever 41 into its neutral position thereby releasing lever 42 which permits the throw-bar 44 to return to its normal or rest position and in so doing, 1t engages with the linger 45-A and brings th`e flipper piece 46 over the dead center and .being over-balanced by the portion 46-B thereof, returns said flipper to lits rest position against the-stop 49 which also limits the clock-wise rotation of the flipper piece when the member 46-B is vdisposed across the vertical slot Ll-A to deflect coins down through the chute 48 and into the vexterior receptacle 48--A. A counting or registering arrangement 50 is provided having extension fingers which reach into the coin chute 46-A, each coin, ofcourse, pressing one of the fingers and causing rotation of the member 50 which actuates any of the well-known commercial types of counters to record the number of Y provided at its outer end with the usual nozzle 53 and the hook lev'er itself being arranged in neutral position ywhen the hose end is hung thereon. The shaft 3-13 upon whichv the counting gears 2 are mounted between frictionA disks, is itself, held by a friction dlsk 3-M which exerts a greater friction on the shaft than do the counter friction disks. A

This prevents the shaft from t/urning with the counters but does not prevent the shaft .together with the counters from being turned backward or to zero by the wiping Contact of the roove plate 3 on the wheel 3?-13 attached rmly to the'snaft., l

To the hook lever '4 is attached the rod 54 by a link 54-A which is located inside the pump housin The lower end of the rod 54 is rovid withl lan off-set -54--B which exten s through a suitable slot in a housing 54--C secured on the inner wall of the pump casing. Within this housing -54--C, there 1s rovided the plunger pawls v55 and 63, see Eigure 2, thelpawl 55 of which is arranged to engage a ratchet wheel 56 carried upon the shaft 15. This connection prevents the pump drive shaft 15' from'being moved in clockwisel'direction until the hook lever 4 is released by the disengagement therefrom'of the nozzle 53, such disengagement, of course, causing the upward movement of the rod 54 whichslips the plunger 55 out-of engagement with` the ratchet Wheel. 56. On the rod 54, thereiis also provideda-slotted portion 57 in whichrests a in 57-A that is fastened to' a slide 58, the ide having a suitable pin and slot connection with the inside wall of the pump .casing and being arranged to have vertial movement to the bottom of the coin chute 1 adjacent the entrance'thereof, when the hook lever 4 and the rod 54 mpve nipwardly. j Whenthe -long' end of the hookile` tmvelsupward, the short end moves down and releases the'pump racl stop 30 as well as the lock plunger 55, just referred to. Now upon inserting a coin'or coins, the machine canbe operated, the cl'utch 16 being tripped Awhich causes the clutch lever 19 to travel downward. This moves the rod 58 and lever 59 and the latter is then above and in'the path 'ofthe' catch 60 n the 3hook lever 4. vThe hanging upv of the hose '68- by its hook' 84 'on the hook end of the lever 4 causes the downward movement of the long end of the hook and the upward movement of the short vend.,r The catch 60 on its Ishort end engages the free end of the lever 5g throws the clutch and hooks it out of engagement on/the catchv lever 20. At the end of the upward travel of theshort end of the hook lever 4 and .after to the short end of the hook lever-4 engagea the finger 62 which is attached to pump rack I lstop 30 and forces the latter back to its original position in which position, the pump rack cannot be moved upwardly. Use 1s made of suitable springs to hold the 'various levers, catches and push rods in operating position as illustrated and in viev7 of the fact that these are mechanical expedients, it is not believed that any detailed mention need be made thereof.

The ,plunger 63within the housing 54-C and before referred to, prevents the pump drive shaft from turning in a counter clock- Wise direction at all times and of f course prevents the pump rack from moving downward when the'clutch is engaged and the pump is in operation. In supporting the hose in proper relation to carry out certain features in my invention, I have provided a lpipe 64 which is pivoted in bearing 65 and w ich bearing has a feed pipe 66 attached thereto, and through connection with the ilexible hose 67',r allows the pipe 64 to move freely up and down. On the long end of the pipe 64 is attached, also, a discharge hose 68 and a nozzle 53 see Figures 3 and 4.

It is\to be understood that the pump and all of the mechanism can-be operated either v by hand through'the crank 69 or by the electri c.n.1'otor70. If the pump or vending machine is to be operated by hand, then the key l71is moved inwardly to engage and `is turned to rock the rod 72 which, in turn,

operates the mechanism abtrat to be described.

After a coin or `coins are inserted into the coin fslot or slots, (it of course being understood that a single coin or any number of coins' maybe inserted into one or all of the coin slots), the hose 68 is taken off the hook lever 4 and the nozzle 53 is inserted into the gasoline tank of a car or any other receptacle. The bever 74 mounted on nozzle 53 is then depressed and through the medium of the' Bowden wire 75, operates the catch lever 76 which is movably fastened to the pipel4 and?v hooks on to a stationaryvcatch member 77, L

thus perniitting the pipe 64 to be pulled downward about its pivot point,'as hereinwbefore described. As the pipe 64 is pulled downwardly, the end thereof, which is beyond the pipe bearing 65 moves upward and in so doing, closes the switch 78 which conipletes the motor circuit as the switch 52 has the lever 80 so thatthe clutch faces 82 are brought into'contact with each other and thus operatively connect the moto'r 70 and the pump drivel shaft 15.

'lf the receptacle should become filled before the mechanism stops, then releasing the A'up by the spring 81 andthe return of the free hose 68 will permit the pipe 64 to be pulled endof the pipe 64 beyond its fulcrum point, renders the clutch inoperative as well as cutting off the power from the motor by opening the switch 78 with the result that the How of gasoline or liquid stops, because the pumpingaction has ceased.

When the machine 1s operated by the motor, the crank 69 is removed by unscrewing the cap 83 and a closed cap is screwed in its place andA locked. ,Suitable means for locking either cap are provided as at 83-A, the crank 69 being held in its normally declutched position from the end of the shaft V15 through the medium of the suitable spring arrangement 83B.

The pump drive-shaft 0n which the driving clutch member 16 and driving clutch member 82 of the motor is mounted, passes through the hollow shaft 15-11 whereon the driven clutch member of the pump drive gear 22 is mounted, it 0f course, being understood,

l that this pump drive gear 22 does not operate unless either one of the clutches is engaged to their respective mating members, and has a ratchet return movement to permit gravity return of the lift pump rack 23 under the inliuence ofthe Weight of liquid in the pump cylinder, (not shown).

An object-of my invention is'to provide a mechanism for locking the machine when the contents thereof have been exhausted, means being also employed for informing the publie of this condition and in'order to carry out this object, I employ on the shaft 15-A upon which the pump drive gear 22 is mounted, an extension 85-A which is arranged to engage asuitable escapement wheel or gear 85, which is in turnfmpunted on a stud shaft supporting another gear 86, there being provided a ratchet attachmentbetween the gear 85 so that the gear 86 is moved in one direction only,regardless of the direction ofthe movement of the gear 85. The gears 85, 86 are mouiited on a suitable shaft which is jour-e nallcd in a depending portion Z2-B which is'cast integral with Ithe bearing 22C in which the shaft l5-4A isjournalled. The gear `86Vcooperates with a gear train 86-A which operates the shaft 87, on the latter of which is mounted, the cam 88 whose high portion is arranged to. engage the rod 89. This rod 89 is of course, held in a suitable bearing and is provided at its upper end with a bevelled projection 90 which engages into the slot of a catch 91 which, when operated,

trips the push rod 92, the latter being actu;

ated by a spring to bear down upon the rocker arm 92-A. and force the same against the stop rack support`93 attached to the pump rack 23. The rocker arm 92-A is.' held in neutral position by the counterweight which is cast integrally with its left end as at 92-E, neutral position being that position in which the right hand end of the lever 92-A beyond its point of fulcrum is brought up against the pin 94. As the pump stop rack 23 and rack support 93 attached to the same, move upwardly, the pressure of the push rod spring now bearing through the push rod 92 on the rock arm 92--A forces the latter to follow the upward movement of the pump rack 23 and stop rack support 93 until the right end of the rocker arm 92-A rests on the pin or stop 95 against which it remains until the return of the pump rack 23 and stop rack support 93 which, in their downward movement, depress the left end ofthe rocker arm 92-A causing the right `end thereof to travel upwardly to push the push rod 92 up to engage the sliding lock 96. This sliding lock 96 is moved through the medium of a finger 97 which is pivotally held in a slotted portion of the push rod 92 and is operable only against the lock 96 upon an upward movement of the rod 92. This finger 97 moves out of the way of the sliding lock 96 on -a downward travel of the push rod 92. In the upward movement, however, of the push rod 92 when the lock 96 is moved back against its actuating spring, it disengages the main spring rod 98 which permits actuation of the main spring 99 to move the rod 98 upwardly. This rod is rigidly secured to the rod 100 and the latter is connected to the rods 101 and 102 through the medium-of the groove plates 103 land 104 respectively, the plates being attached to the rod 100 and being in the nature of cam plates which operate the eccentrically turned ends of said rods 101 and 102. Actuation of these plates impart a radial movement to the rods 101 and 102. The rod 101 is provided at one of its ends with a groove plate 105 which actuates a coin slot lock slide 106 which is concealed beneath a rain shed 107 provided on the outer surface of the pump casing, this slide 106 actin to lock the coin slot 4and bearing the suita le Wording Empty or the like, in order that the buying public can be informed for the reason for the locked coin slots. The rod 102 has also a crank on its right hand end which is turning movement of the rod 102 moves the cam 108 into position over the right e'nd of the pipe 64 and locks the latter, preventing operation thereof. The grooved plate 109 is moved at the same time and being engaged with the push rod 110. moves the latter down.- wardly to engage the hook lever 4 locking the same. The upper end of the rod 100 is operatively connected to the drinn 111 through the medium of the groove plate 112 which depends from said drum 111 and in which the offset end of the rod 100 moves 'upon an upward movement ofthe rod to rotate the drum 111 a art of a'revolution. This drum 111is provi ed with alternate open andv closed spaces on`its face, in the nature of a stencil.

which bringsinto the closed spaces bearing the inscription Empty into view. Corresponding stencil-like openings are provided in the machine housing. At the saine time the o'set end of the rod 100 moves upwardly, it comes into contact with the switch 113, clos` ing the latter and lighting the electric light 113-A which illuminates the Empty sign.

In order to set the machine in: operation again, the key 114 is inserted int-o the lock 115 and meshes with the end of`rod 116 whichv is normally held out of engagement with the key through the medium of the spring 117 A push on the key 114 connects the rod 116 with rod87 to which the registering gears and cam 88 are attached and by turning the cam 88 over until the high point thereof-is out from under the rod 89, the latter comes to rest on the low portion of the cam being moved downwardly by the spring .118 and the high point of the cam is in the position it normally occupies at the beginning of its travel. As the rod 89 moves downwardly, it disengages the bevel 90 from the catch 91 and the latter is forced by spring 114 into the catch of the push rod 92 holding the latter' in neutral position when the pump rack 23 and stop rackv support 93 are moved upward. U until this time, the push rod 92 has been he d in neutral position by the rocker -arm 92-A through the downward pressure of the stop rack support 93 resting on said rocker arm.

Now, upon inserting bar key 120 into lock 121 and engaging the key 120 'with the crank bar 122, which, by the way, is connected to the lower end 4of rod 123, the upper end of said rod being movably connected to the main spring rod 98; and turning the bar key 120, the main spring 99 is compressed and the slide catch 96, being held by a spring in.

' 126 which meshes with Key 114 has a pointer 124 attached lto it which points to ascale 125 provided on the pump housing which is marked in gallons to show the capacityof the machine. This enables the cam 88 to be set to the amount containedin the machine at the` time of the s etting of the same during the refilling operation and it'also; can beuscd as la check-up when inspectin a: machine to determine the numbery of galonsthat have been used at anytimej.

On the.l shaft 87 is also'4 attached the gear ear 127 wliich,'in turn, is attached to the s aft-128, the latter engaging in ageai" train 129 which is encased ina suitable housing and which indicates the total amount'of liquid dispensed and also the. amount at each operation.` -The indications made by the indicator may be carried out through the medium of a series of counting Wheels which Iare suitably attached to the gears and. the construction ofthis mechanism, it is believed,`need not be considered in detail at this point asv any suitable conimercial counting mechanism may be em-l ployed.

It is to be understood, of course, that the machine may be oV rated'elect'rically without using the mec anism connected to and operated by the ipe64 and i'n this connection, a reel 131 1s employed having wound thereon a double wire drop cord, this reel being electrically connected to the cord through. the medium ofthe two fiatspring contacts 131-.A which bear on the two insulated rings 131`B which are mounted ontheo'utside of i.

side disks of the reel 131. From the attached end of said spring .contact, two wires 132 and 133 continue the circuit, the wire 132 con' necting the minor side ofthe line from the inlet while the wire 133'connectsthe plus side of the circuitbetween the switch 7 8 andthe.

switch 52. Neither ofthe motor circuits will operate before switch 52 is closed. The free end of the dropvcord 134' is connected to the two switch blades 136 and 137 v within the plug 138 wherein plunger 139 is mounted and eld in neutral position by a suitable spring employed for'that purpose'. By pullin the plug 138 out of its socket in the pump ous.

ing, the cord is pulled with it and when taken the desired distance, for instance, to the gas tank of an vautomobile to be filled,'the'n by i pressing in onthe plun i' 139, the latterv slides between the two switch blades 1 36 and 137 and completes the circuit, providing coins have been inserted and the switch 52. is closed by the arm 6 which protrudes into l the coin slot 1. The two electric wires leading from the switch 52 are joined to .the circuit through the medium of the wires 140 see Figure 4, these wires not being shown completed through to the switch 52, in order to avoid confusion in the illustration.

Switch 52A is operated by the arm 6 which has a bevelled end bearing against the offset end of switch lever 51 and when the front end of arm 6 which protrudes into the coin slot is raised by the inserted coin, the rear end of the arm 6 moves downwardvand in H,and rod 54 after the machine'has dispensed the amount of Huid purchased'. ,The rod 54 being connected to the hook lever 4, is moved downward when the hose is replaced onl the hook lever and in moving downward, the bevel 141 comes into contact with the left end of arm -A which is particularly shaped and by depressing the left end of the.

arm v140-A, the right end of said"a r1n 14o-A` is broughtfto bear onfthe lower end of the switch lever 51, moving ,the sam'e oil` the contacts and into the path of the arm 6,

which movement leaves it in a position to op-A4 erate again upon the insertion of coins.

As the bevel 141'on the rod 54 bears down on .the left hand end ofthe arm140-A 'and moves the latter through its useful distance, the lowerportion ofthe arm 14o-A abuts the stop pin 142 and as the arm is of spring steel, it yields and permits thebevel 141 on rod 54 to slip past and the arm 1404,-A is moved clear of the switch lever 51 by the spring attached to said arm. i

The contact point of the left end of armY 14C-A is now above bevel 141 on rod 54 and A as arm 140-A must not be moved-on the upward movement of the rod 54, the left portion of arm is so shaped that it will yield tothe pressure of bevel 141 and permit thelat ter to be slipped past without moving the arm 140-A as the latter isirestingagainstthe stop pin 143 which prevents the upward movement of the arm 140-A.

After coins areinserted and the hose G8 is taken from the hook lever 4, and the latter has travelled upwardly an'dpulled up rod 54 rwhich is attached thereto and upon the upward movement of the rod 54, lever; 145 is released and is pushed downward by' thev spring 146 which causes ratchet bar 147 to bear on and catch the lever 148, lever 144`is moved downward until lever 148 is locked in the catch of the ratchet bar 147./ liever 148 isw connected through a rod with the lever' 149 which,-in turn, is connected to the slotted end of the rod 150 which is fastened ,to the spring housing 151, wherein'the disk end of the rod 152 is heldhby spring 153, the latter acting as a yielding medium between the rod 150 and the rod 152, said rod MS2/being connected to the motor clutch arm 80. By

- moving the lever 144 and thereby moving all The switch is' of the parts connected thereto, the motorA clutch is engaged and as the-spring 153 is sufficiently compressed and the mechanism locked in operating position by the ratchet bar 147, themac'hine will operate upon the closing ofthe circuitin the plug 138.'

After the machine has loperated and the rod 54 is movedVv downward by the hook leverA f 4, when the vhose is hung up on the latter,

then the-end of the. rod 54'presses down on lever 145 which trips the ratchet bar l147 releasing `lever ,148 and all "of the mechanism attached thereto, which of course, makes the motor clutchj82 inoperative. The rod 79 which is connected to -the motor clutch throw- A out arm -80 and pip'e`64 has a slotted upper` end and moves freely ,when the clutch' isop# erated'ifrom thelever'144. 1 f

Referring toa detailed operationfof ,the stoplrack, it will be notcdthaton the front side of the stop rack support 93, 4is attached a narrow rack which is movably' fastened through apin and 'slot connection R to said stop rack support93. 'Theteethon the'r'ack i 160 arethe same shape asfthe teeth on the stop racksupport 9,3l but thespring 162 bearing against the movable rack 1 60'and the fixed spring support on the stop rack support 93,

' presses the rack 160 which slides inthe groove 163 located at each end upward' far enough -so that the teethon therack'l() protrude above the'iteeth on thestopracksup1- port 93 andv when the stop rack support. 93

movesagainst'the slidingstopbar 30, then the teeth on theTack liaremoved down'l and even with theteeth on thefsto'p rack support 93 and in so doing, the rack 160 moves down and ,stop 165A attached to the rack- 160 moving downward, breaksthe -contactfof the switch168 which stops the motor when the stop rack bar 30.

.Itis quite evident that in a machine of this character that any number of coin slots or disks may be employed and operating levers used in connection with each.

It is also evidentthat other means may beemployed for-indicating that the pumpl is. empty, if desired. f f It is evident, therefore, that I have providsupport 93' abuts theslidi-ng stop ed an automatic liquid dispensing machine which may be operated by'hand orby-'elel tricity and which will automatically' measure andj discharge the amount of liquid purchased, depending upo'n theV number of coms and the denomination of the same which are -v placed in the coin slot.

'It is-further evident that I have provided in a dispensing machineof the characterreferred to, ameans for indicating when the machine is empty and also a means for closing the entrance to lthe coin slot when-the supply of fluid has been eXhausted.

, While I have illustrated vvand described my. l i

-invention with some degree ofparticularity,

I.l realize that inpractice various" alterations therein may be made. Irtherefore reserve the right andprivilege of changing the form of the details of construction or otherwise altering the arrangement of the correlated parts without departing from the spirit of the'invention ortlie; scope of the appended claims.

Having thus described my invention, what I claim as new anddesire to secure` by United States Letters Patent is I 1'.: In a liquid pump, a shaft a motor for operating the shaft, a pumping rack, a inionon the shaft for moving said rac la moving said stop member into thepath of,

the toothed 'member a predetermined distance.

2. In a liquid pump, apivotally mountedY filling pipe, a pump rack for discharging the Ypump contents through 4the pipe, a. shaft loperatively connected tothe rack, a motor. a Yclutch for connecting the motor and lthe shaft, and a link connecting said pipe andir clutch for movingl theclutch to operating positionrizupon a pivotal movement of the pipe. v i l i In a liquidpump, a. pivotally mounted filling pipe, a pump rack for discharging the pump contents through the pipe', a shaftioper- Y- atively connectedy to the rack, a motor, a

clutch for connecting the motor and thesliaft, a link connecting the clutch with said pipe 'for moving said clutch to operatively connect the motor and shaft upon a pivotal movement oflsaidpipe, and means for manu- 'ally controllin saidl clutch.

4.\In-a liqui pump,a pumping member, a pivotally mounted liquid dischargepipe,

` a 'circuit completing switch operable upon v a predeterminedv 4movement of said pipe, a motbr in thecircuit for operating said pum ing member, and means for controlling tiie movement of the pipe. i, Y

' 5. In a liquid pump, a movablepumping member, means including a motor, a motor circuit, arack J depressibly mounted on the member, a switch sis ` liquid discharge hose, a pivoted arm upon "which the end of the hose ishung, an operat?Y 654iing shaft, a gear connecting the shaft and" Y ,normally held yclosed by said member in its non-depressed position, said/switchbeing 'disposedy in said motor circuit, and means for depressing said rack to open said switch at aV predetermined point in the travelof said pum in'g member.

6. n a liquid pump, a pumping member, a

the pumpingmembcr, a motor for driving .manipulated or operating saidmembersaid shaft, a clutch for operatively connecting the'gear and the shaft, and a lever arranged to be engaged and moved by said arm 4for o erating said clutch. n

7. n a liquid pump, a pumping member and a liquid dispensing member, a motor circuit, a lighting circuit, alight switch, a motor switch arranged tobe engaged by said dispensing member for breaking said motor circuit at the end offa dispensing operation, and means including a rod movable endwise for engaging said light switch for Completing said" lighting circuit uLpon exhaustion of the pump content.

8. In a liquid pump, a pumping rack, a drive shaft, a. pinion on the shaft for moving said pumping rack, a toothed stop rack movably mounted on the pump rack, a switch normally maintained in closed position by saidY stop rack'. a motor, a motor circuitof which said switch forms a part, a stop meinber/andv means for moving Vsaid stop member into the path of said toothed sto rack for breaking tlieinotor circuit ata pre etermined time. i

9. In a liquid pump, a pumping rack, a liquid discharge hose, a drive shaftfa pinion Von the shaft for moving said pumping rack,

a toothed member movably mounted on the pumping rack, a switch normally maintained in closed position by said toothed member, a motor, a inotoi` circuit of which said switch forms a part, a stop member movable into the Vpath of said toothed member for breaking the motor circuit at a predetermined time and stopping the pumping rack, and a. coin controlled means for moving said stop member a predetermined distance. t

10. A pump of the character described, a pump rack, a motor, an operating shaft, a

gear on thefsharft for actuating said rack, a

clutch connecting the shaft and the motor, a filling hose, a pipe to which said hose is con-- nected, said pipe beingY pivoted within the pump housing and a 'connection between the pipe and the clutch whereby the latter is upon a pivotal `movement of said pipe. i l

lil. In a pump ofthe character described, a pump rack, a motor, an operatinggshaft, a gear on the shaft for actuatin said Tack, a clutch connecting the shaft an lthe/motor, a filling liose, a pipe to which saidlhose is connected, said pipe being pivoted Within the pump housing, a connection between the pipe andthe clutch whereby the latter isV manipulatedV upon a pivotal movement of said pipe and a key operated cam member for preventing pivotal movement'of said pipe. l

In testimony whereof I affix my signature.

PAUL KRAUSE. [1.. e] 

